The test assesses whether the provided URL includes a unique or persistent identifier, using a tool called IDUTILS to detect known identifier schemes. The system successfully identifies two types of unique identifier schemes present: a DOI (Digital Object Identifier) or a URL.
Source: Since FAIROS uses [F-UJI](https://f-uji.net) to assess a Research Object, this test is an instance of the test **FsF-F1-01MD-1**. You can find more information in the european project FAIR IMPACT(https://fair-impact.eu/metrics-data)